Comparing the luminescence properties of ZnAl2O4 synthesized by citrate-nitrate auto-combustion and solid-state synthesis routes

Remarkably enhanced upconversion luminescence in Na+ codoped spinel nanoparticles for photothermal cancer therapy and SPECT imaging

“…Among many oxide hosts activated with RE 3+ ions, ZnAl 2 O 4 with a cubictype spinel lattice is a potential host due to its excellent properties like low phonon energy, non-toxicity, high photochemical and thermal stability, low cost, radiation stability, hydrophobicity, and wide band gap (B3.8 eV). [39][40][41] Spinels consisting of Zn 2+ ions as RE 3+ activated hosts (AB 2 O 4 :RE 3+ ) have been explored for their efficient emission properties and ability to incorporate RE 3+ ions at tetrahedral (A 2+ ) and octahedral (B 3+ ) sites. Moreover, an enhancement in UCL was obtained in Ho 3+ /Yb 3+ doped spinels, by codoping of nonluminous centers as charge compensators.…”